Cleanup: Forward declare v8::Isolate in V8Initializer.

Source/bindings/v8/V8Initializer.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 32 matching lines @@
 #include "core/dom/ExceptionCode.h"
 #include "core/inspector/ScriptCallStack.h"
 #include "core/frame/ConsoleTypes.h"
 #include "core/frame/ContentSecurityPolicy.h"
 #include "core/frame/DOMWindow.h"
 #include "core/frame/Frame.h"
 #include "public/platform/Platform.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 #include <v8-debug.h>
+#include <v8.h>
 
 namespace WebCore {
 
 static Frame* findFrame(v8::Local<v8::Object> host, v8::Local<v8::Value> data, v8::Isolate* isolate)
 {
     const WrapperTypeInfo* type = WrapperTypeInfo::unwrap(data);
 
     if (V8Window::wrapperTypeInfo.equals(type)) {
         v8::Handle<v8::Object> windowWrapper = host->FindInstanceInPrototypeChain(V8Window::domTemplate(isolate, worldTypeInMainThread(isolate)));
         if (windowWrapper.IsEmpty())
@@ skipping 159 matching lines @@
     v8::V8::AddMessageListener(messageHandlerInWorker);
     v8::V8::SetFatalErrorHandler(reportFatalErrorInWorker);
 
     v8::ResourceConstraints resourceConstraints;
     uint32_t here;
     resourceConstraints.set_stack_limit(&here - kWorkerMaxStackSize / sizeof(uint32_t*));
     v8::SetResourceConstraints(isolate, &resourceConstraints);
 }
 
 } // namespace WebCore